CN216818552U - Battery pack and power consumption device - Google Patents

Abstract

The application relates to a battery pack and a power consumption device, wherein the battery pack comprises a shell, a plurality of electric cores, a circuit board and a plug-in component. A plurality of electric cores set up in the casing. The circuit board is arranged in the shell and is electrically connected with the battery cores. The plug-in component comprises a first connecting body, the first connecting body is connected to the circuit board, and the first connecting body is connected to the shell. The first connecting body is of an integral structure, so that the stability of the integral structure of the battery pack is improved, the integral protection performance of the battery pack can be improved, and the use reliability and safety performance of the battery pack are improved.

Description

Battery pack and power consumption device

Technical Field

The application relates to the technical field of battery production, in particular to a battery pack and a power utilization device.

Background

Generally connect with the pencil between inside circuit board of group battery and the group battery casing, with the circuit board connection back in the group battery, the pencil rocks easily, leads to the holistic structural stability of group battery relatively poor, probably causes the safety risk.

Therefore, it is highly desirable to improve the structure of the battery pack.

SUMMERY OF THE UTILITY MODEL

The application provides a group battery and power consumption device aims at improving holistic structural stability of group battery and security performance.

In a first aspect, the present application provides a battery pack including a housing, a plurality of cells, a circuit board, and a plug member. A plurality of electric cores set up in the casing. The circuit board is arranged in the shell and is electrically connected with the battery cores. The plug-in component comprises a first connecting body, the first connecting body is connected to the circuit board, and the first connecting body is connected to the shell.

From this, above-mentioned technical scheme's first connector is monolithic structure, is favorable to promoting group battery overall structure's stability, can improve the holistic barrier propterty of group battery, improves the use reliability and the security performance of group battery from this.

In some embodiments, the first connector includes a base and a plurality of conductive members disposed on the base. The base is connected to the housing. The conductive part comprises a first conductive part and a second conductive part, wherein at least part of the first conductive part is embedded in the base part, and the second conductive part is connected with the first conductive part and the circuit board.

Therefore, the base part in the technical scheme separates the conductive piece from the shell, the risk of contact short circuit of the conductive piece and the shell can be reduced, and the safety performance of the battery pack is improved. The conductive piece is electrically connected with the circuit board, the structural stability between the conductive piece and the circuit board is relatively high, and the risk of shaking of the conductive piece in the shell can be reduced. And the base part plays a role in supporting the first conductive part, so that the stability of the whole structure of the conductive part can be improved. The second conductive part electrically connects the first conductive part and the circuit board, so that power and signal transmission of the battery cell can be realized.

In some embodiments, the base includes a base body and a first connector. At least part of the first conductive part is embedded in the base body. The first connecting piece protrudes out of the surface of the base body facing the circuit board, the first connecting piece is provided with a clamping groove, and at least part of the second conductive part is embedded in the clamping groove.

Therefore, the base main body in the technical scheme can provide supporting and protecting functions for the first conductive part, and the possibility of deformation of the first conductive part can be reduced. The clamping groove of the first connecting piece can provide positioning and supporting functions for the second conductive part, and assembling accuracy of the second conductive part can be improved.

In some embodiments, the base body includes a body portion, a first protrusion, and a second protrusion. The main body part is connected to the first connecting piece. The first convex part is arranged around the circumference of the main body part, and the outer circumferential surface of the first convex part is provided with a concave part. The second convex part is arranged around the circumference of the main body part and is positioned on one side of the first convex part, which is far away from the circuit board. Wherein, it has the colloid to fill between first convex part and the second convex part, and bonds through the colloid between main part and the casing.

Therefore, after the colloid in the technical scheme flows into the first convex part and the second convex part, the colloid is positioned between the base main body and the shell, and the reliability of the colloid for bonding the base main body and the shell can be improved.

In some embodiments, the housing includes a housing body and a protruding portion protruding from the housing body, the protruding portion is disposed opposite to a portion of the main body portion, and the protruding portion abuts against a side of the second protruding portion facing away from the circuit board.

From this, the protruding portion among the above-mentioned technical scheme can play limiting displacement to the second convex part to can improve the accuracy of installation second convex part.

In some embodiments, the housing includes a first slot disposed opposite the circuit board.

When installing the circuit board to the casing in, first groove can play the guide effect to also can play certain limiting displacement, be favorable to assembling the circuit board in the casing.

In some embodiments, the first connector is connected to the circuit board.

In this application embodiment, can give effort and reaction force mutually between first connecting piece and the circuit board, the circuit board can provide further supporting role for first connecting piece and can improve the structural stability of first connecting piece, reduces the risk that first connector takes place to rock.

In some embodiments, the base further comprises a seal ring disposed around an outer peripheral surface of the base body, the seal ring sealingly connecting the base body and the housing.

The sealing ring can be used for sealing and connecting the base main body of the first connecting body and the shell, and the sealing performance between the base main body and the shell is improved.

In some embodiments, the plug member further comprises a second connector body connected with the first connector body, the second connector body being for electrical connection with an external member.

In the embodiment of the present application, the second connection body is provided to facilitate electrical connection between the battery pack and the external member.

In a second aspect, embodiments of the present application further provide an electric device, including a battery pack as in an embodiment of the first aspect of the present application, where the battery pack is used to provide electric energy.

According to the group battery that this application embodiment provided, the first connector of group battery is monolithic structure, is favorable to promoting group battery overall structure's stability, can improve the holistic barrier propterty of group battery, improves the use reliability and the security performance of group battery from this. And adopt the consumer of this group battery, also can promote the stability of consumer overall structure, and then improve the reliability in utilization and the security performance of consumer.

Drawings

Features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of a battery pack provided in some embodiments of the present application;

fig. 2 is a schematic view of a partial structure of a battery pack provided in some embodiments of the present application;

fig. 3 is a schematic structural diagram of a circuit board and a first connecting body of a battery pack according to some embodiments of the present application;

FIG. 4 is an enlarged schematic view at A of the circuit board and first connector shown in FIG. 3;

fig. 5 is a schematic view of another structure of a circuit board and a first connecting body of a battery pack according to some embodiments of the present application;

FIG. 6 is an enlarged schematic view at B of the circuit board and first connector shown in FIG. 5;

fig. 7 is a schematic structural view of a first connection body of a battery pack according to some embodiments of the present application;

fig. 8 is another structural schematic diagram of a first connector of a battery pack provided in some embodiments of the present application;

FIG. 9 is an exploded view of the first connector shown in FIG. 8;

fig. 10 is a schematic view of another structure of a first connector of a battery pack according to some embodiments of the present disclosure;

fig. 11 is a partial structural schematic view of a battery pack according to another embodiment of the present application;

FIG. 12 is an enlarged schematic view of the battery pack shown in FIG. 11 at C;

fig. 13 is a schematic view of another structure of a circuit board and a first connecting body of a battery pack according to some embodiments of the present application;

FIG. 14 is an enlarged schematic view of the circuit board and first connector shown in FIG. 13 at D;

fig. 15 is a partial structural schematic view of a battery pack according to another embodiment of the present application;

FIG. 16 is an enlarged schematic view of the battery pack shown in FIG. 15 at E;

fig. 17 is an enlarged schematic view of the battery pack shown in fig. 15 at F.

Fig. 18 is a schematic structural diagram of an electrical device according to some embodiments of the present disclosure.

In the drawings, the drawings are not necessarily drawn to scale.

Wherein, in the figures, the respective reference numerals:

J. a colloid;

1. a battery pack;

10. a housing; 10a, a first housing part; 10b, a second housing part; 11. a housing body; 12. a protrusion; 13. a first groove;

20. an electric core;

30. a circuit board;

40. an insertion member;

41. a first connecting body; 411. a base; 4111. a base body; 41111. a main body portion; 41112. a first convex portion; 41112a, a recess;

41113. a second convex portion;

4112. a first connecting member; 4112a, a clamping groove;

4113. a seal ring;

412. a conductive member; 412a, a first conductive member; 412b, a second conductive member; 4121. a first conductive portion; 4122. a second conductive portion;

42. a second connector.

2. And (4) a power utilization device.

Detailed Description

Embodiments of the present application will be described in further detail below with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are included to illustrate the principles of the application.

In the description of the present application, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicate an orientation or positional relationship that is merely for convenience in describing the application and to simplify the description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. "vertical" is not strictly vertical, but is within the tolerance of the error. "parallel" is not strictly parallel, but within the tolerance of the present application, the tolerance is 0. + -. 10%.

In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood as appropriate by one of ordinary skill in the art.

The appearances of "a plurality" in this application are intended to mean more than two (including two).

The embodiment of the application provides a battery pack which comprises a circuit board, a plug-in component and the like. The plug-in component comprises a first connecting body connected to the circuit board. The battery pack with the structure is relatively simple in installation process, and the battery pack is easily protected.

The battery pack provided by the embodiment of the application can be suitable for the electric device using the battery pack.

For a better understanding of the present application, embodiments of the present application will be described below with reference to fig. 1 to 15.

As shown in fig. 1, a battery pack 1 provided in an embodiment of the present application includes a housing 10, a plurality of battery cells 20, a circuit board 30, and a plug member 40. A plurality of cells 20 are disposed within the housing 10. The circuit board 30 is disposed in the casing 10 and electrically connected to the plurality of battery cells 20. The plug member 40 includes a first connection body 41, the first connection body 41 is connected to the circuit board 30, and the first connection body 4 is connected to the housing 10.

The housing 10 has a hollow cavity, and provides a receiving space for at least part of the plurality of battery cells 20, the circuit board 30 and the plug member 40; the adverse effect of liquid or other foreign matter on the battery cell 20 can be reduced. The housing 10 may be a separate structure, and for example, the housing 10 may include a first housing part 10a and a second housing part 10b, and the first housing part 10a and the second housing part 10b cover each other to form a hollow cavity. The case 10 can buffer the pressing of the components inside the case 10 by the external force, thereby improving the safety performance of the battery pack 1.

The housing 10 may be made of metal, such as aluminum shell, stainless steel, etc., or organic polymer, etc. For example, when the casing 10 is made of a metal material, since the metal material has conductivity, an additional protection member may be added to the casing 10 to reduce the risk of short circuit between the casing 10 and the battery cell 20. The case 10 may be made of an organic polymer material, and has a light weight, so that the weight of the battery pack 1 can be reduced.

The metal ions can be released and/or embedded in the battery cell 20, so that charging and discharging are realized. The plurality of battery cells 20 may be connected in series, in parallel, or in series-parallel, to improve the voltage and capacity of the battery pack 1, where the series-parallel connection refers to that the plurality of battery cells 20 are connected in series and in parallel.

The circuit board 30 electrically connects the battery cell 20 and the first connector 41 of the plug member 40, and can output or input power from or to the battery cell 20 and transmit detection signals and control signals. The first connection body 41 and the circuit board 30 may be fixedly connected to each other, so as to improve the stability of the battery pack 1 during use. Optionally, the first connecting body 41 is soldered on the circuit board 30, a conductive circuit is disposed in the circuit board 30, one end of the first connecting body 41 is connected to the corresponding circuit, and the other end of the first connecting body 41 is electrically connected to other components. Illustratively, the Circuit Board 30 may be a Printed Circuit Board (PCB), which may be used to transmit power to the battery cell 20 and protect the battery cell 20. Optionally, the circuit board 30 includes a Battery Management System (BMS) that can charge and discharge the Battery cell 20.

The first connecting body 41 of the embodiment of the application is connected to the circuit board 30, the first connecting body 41 and the circuit board 30 are mounted simply and conveniently, the first connecting body 41 is of an integral structure, the stability of the overall structure of the battery pack 1 is favorably improved, and the overall protection performance of the battery pack 1 can be improved.

Optionally, the first connecting body 41 includes a connector.

With reference to fig. 1, in some embodiments, the plug member 40 further includes a second connecting body 42, and the second connecting body 42 is connected to the first connecting body 41. The second connecting body 42 is used for electrical connection with an external member.

The second connection body 42 and the first connection body 41 can be detachably connected, for example, by plugging, so as to facilitate the assembly of the first connection body 41 and the second connection body 42.

The second connection body 42 includes two end portions disposed opposite to each other, one of the end portions being electrically connected to the first connection body 41, and the other end portion being electrically connected to an external member, thereby achieving electrical connection between the first connection body 41 and the external member. In the embodiment of the present application, the external component may be a high voltage distribution system, a battery management system, a consumer, an energy storage system, or the like. Optionally, the electric device comprises a two-wheeled electric vehicle.

As shown in fig. 2-6, in some embodiments, the first connector 41 includes a base 411 and a plurality of conductive members 412. The base 411 is connected to the housing 10. A plurality of conductors 412 are disposed on the base 411, and the plurality of conductors 412 are connected to the circuit board 30. Base 411 provides a support and mounting foundation for conductors 412, reducing the risk of conductors 412 deforming. The base 411 may be an insulating base, isolating the conductive member 412 from the case 10, and thus reducing the risk of contact short between the conductive member 412 and the case 10, thereby improving the safety of the battery pack 1. The conductive element 412 is electrically connected to the circuit board 30 and can be fixedly mounted on the circuit board 30, and the structural stability between the conductive element 412 and the circuit board 30 is relatively high, so that the risk that the conductive element 412 shakes in the housing 10 can be reduced. Illustratively, the conductive element 412 is soldered to the circuit board 30, for example, the conductive element 412 is soldered to the circuit board 30 by wave soldering.

The plurality of conductive elements 412 are mainly classified into two types, one type of conductive element 412 is used for power transmission of the battery cell 20; another type of conductive element 412 is used for signal transmission to implement signal control of battery cell 20. Illustratively, the plurality of conductive members 412 may include a first conductive member 412a and a second conductive member 412b, the first conductive member 412a may be power transmitting, and the second conductive member 412b may be signal transmitting.

Illustratively, each conductive member 412 may include a first conductive portion 4121 and a second conductive portion 4122. At least a part of the first conductive portion 4121 is embedded in the base 411, and the second conductive portion 4122 connects the first conductive portion 4121 and the circuit board 30. The base 411 functions to support the first conductive part 4121, and can improve the stability of the overall structure of the conductive member 412. The second conductive portion 4122 electrically connects the first conductive portion 4121 and the circuit board 30, and power and signal transmission of the battery cell 20 can be achieved.

At least a portion of the first conductive portion 4121 is embedded in the base 411, and the first conductive portion 4121 may be partially embedded in the base 411 and extend out of the base 411 to facilitate connection between the first conductive portion 4121 and the second conductive portion 4122. The first conductive part 4121 may be entirely embedded in the base 411, which may further improve the stability of the overall structure of the conductive member 412.

The second conductive part 4122 may be fixedly mounted on the circuit board 30 to further improve the connection stability between the conductive part 412 and the circuit board 30. Alternatively, the second conductive portion 4122 may penetrate and protrude outside the circuit board 30. Accordingly, the circuit board 30 may be provided with a through hole, and the second conductive portion 4122 is disposed in the through hole to facilitate positioning and installation of the second conductive portion 4122.

Alternatively, the first conductive portion 4121 and the second conductive portion 4122 may be integrally formed, so as to further improve the structural stability of the conductive member 412. Alternatively, the first conductive portion 4121 and the second conductive portion 4122 may be formed separately.

As shown in fig. 7, in some embodiments, the base 411 includes a base body 4111 and a first connector 4112. At least part of the first conductive portion 4121 is embedded in the base body 4111, the first connector 4112 protrudes out of the surface of the base body 4111 facing the circuit board, the first connector 4112 is provided with a slot 4112a, and at least part of the second conductive portion 4122 is embedded in the slot 4112 a. The first conductive portion 4121 is at least partially embedded in the base body 4111, and the base body 4111 can provide support and protection for the first conductive portion 4121, thereby reducing the possibility of deformation of the first conductive portion 4121. The second conductive portion 4122 may be partially embedded in the slot 4112a, or may be completely embedded in the slot 4112 a. The engaging groove 4112a of the first connecting member 4112 can provide a positioning and supporting function for the second conductive portion 4122, so as to improve the assembling accuracy of the second conductive portion 4122. In the embodiment of the present application, the base body 4111 and the first connecting member 4112 may be integrally formed structures or may be separate structures.

As some examples, the first conductive portion 4121 is an elongated structure, and when part of the first conductive portion 4121 is embedded in the base body 4111, another part of the first conductive portion 4121 extends outside the base body 4111. The main structure of the first connecting member 4112 may be formed to extend along the extending direction of the first conductive portion 4121, and the main structure of the first connecting body 41 can provide a supporting function for the first conductive portion 4121. The locking groove 4112a may extend along the thickness direction of the first connecting body 41, may provide a better supporting function for the second conductive portion 4122, and may protect the second conductive portion 4122, thereby effectively reducing the possibility of deformation of the second conductive portion 4122.

As shown in fig. 8 and 9, in some embodiments, the base 411 further includes a sealing ring 4113 disposed around an outer circumferential surface of the base body 4111. Sealing ring 4113 may function as a sealing connection. The seal ring 4113 can seal the base body 4111 of the first connecting body with the housing, and can increase the sealing performance between the two. A plurality of sealing rings 4113 may be provided to further increase the sealing performance between the first connection body and the housing.

With continued reference to fig. 8 and 9, as some examples, the base body 4111 includes a body portion 41111, a first protrusion 41112, and a second protrusion 41113. The main body portion 41111 is connected to the first connecting member 4112. The first protrusion 41112 is disposed around the circumference of the main body 41111, and the outer circumference of the first protrusion 41112 is provided with a recess 41112 a. The second protrusion 41113 is disposed around the circumference of the main body 41111 and located on a side of the first protrusion 41112 away from the circuit board 30, wherein a glue J is filled between the first protrusion 41112 and the second protrusion 41113, and the first protrusion 41112, the second protrusion 41113, and the housing 10 are bonded together by the glue J.

After the glue J flows into the first protrusion 41112 and the second protrusion 41113, the glue J is located between the base body 4111 and the housing 10, so that the reliability of bonding the base body 4111 and the housing 10 by the glue J can be improved.

The concave portion 41112a serves as a colloid J flow inlet, a colloid J flow channel is formed between the first convex portion 41112 and the second convex portion 41113, and after the colloid J flows in from the concave portion 41112a, the colloid J continues to flow between the first convex portion 41112 and the second convex portion 41113 and flows between the first convex portion 41112 and the housing 10 and between the second convex portion 41113 and the housing 10, so that the colloid J bonds the main body portion 41111 and the housing 10, and the connection stability between the main body portion 41111 and the housing 10 is further improved. Illustratively, gel J includes a binder.

As shown in fig. 10, alternatively, the concave portion 41112a is provided in plurality, and the plurality of concave portions 41112a are provided at intervals along the outer circumference of the first convex portion 41112. The plurality of concave portions 41112a may be uniformly and equidistantly arranged or may be non-uniformly arranged. The plurality of concave portions 41112a can be used as a colloid J flow inlet, so that uniform flow of the colloid J is facilitated, the bonding speed and the uniformity of distribution of the colloid J can be improved, and the uniformity of bonding strength of each position is improved. Illustratively, the first indentation 41112a includes two first surfaces opposite to each other and two second surfaces opposite to each other, the first surface connecting the two second surfaces. Three recesses 41112a are equidistantly formed on the first surface, and one recess 41112a is formed on the second surface.

As shown in fig. 11 and 12, alternatively, the circuit board 30 and the housing 10 are bonded. The use amount of the colloid J is increased to make the colloid J immerse the end portion of the circuit board 30 close to the main body portion 41111, so that the circuit board 30 and the housing 10 are bonded, the connection stability between the circuit board 30 and the housing 10 is improved, and the structural stability of the whole battery pack is improved. In addition, the glue J fixedly connects the circuit board 30, the first connecting body 41 and the housing 10, and the risk of local stress concentration caused by hard contact between the components can be reduced.

Referring to fig. 13 to 14, in some embodiments, the housing 10 includes a housing body 11 and a protrusion 12 protruding from the housing body 11, the protrusion 12 is disposed opposite to a portion of the main body portion 41111, and the protrusion 12 abuts against a side of the second protrusion 41113 away from the circuit board 30. The protrusion 12 can limit the second protrusion 41113, so that accuracy in mounting the second protrusion 41113 can be improved.

The protrusion 12 may be an annular structure disposed around the outer circumference of the main body portion 41111, but a plurality of protrusions 12 may also be disposed around the outer circumference of the main body portion 41111 at intervals. In the embodiment of the present application, the specific structure of the protruding portion 12 is not limited.

Referring to fig. 13 to 14, in some embodiments, the first connector 4112 is connected to the circuit board 30. Optionally, the surface of the first connector 4112 facing the circuit board 30 and the surface of the circuit board 30 facing the first connector 4112 are connected, and the two surfaces may be directly attached to each other or bonded by using a glue. The first connecting member 4112 is connected to the circuit board 30, and the first connecting member 4112 and the circuit board 30 can provide an acting force and a reacting force mutually, and the circuit board 30 can provide a further supporting effect for the first connecting member 4112 to improve the structural stability of the first connecting member 4112, thereby reducing the risk of the first connecting member 41 shaking. The first connecting member 4112 has a relatively stable structure, and can provide good supporting and protecting effects on the conductive member 412, thereby reducing the risk of deformation of the conductive member 412.

As shown in fig. 15-16, in some embodiments, the housing 10 includes a first slot 13 disposed opposite the circuit board 30. Optionally, the inner surface of the first groove 13 is an inclined surface, when the circuit board 30 is mounted in the housing 10, the first groove 13 can play a guiding role and also can play a certain limiting role, which is beneficial to assembling the circuit board 30 in the housing 10.

In some embodiments, housing 10 includes a second groove 14 disposed opposite body portion 41111. Optionally, the inner surface of the second groove 14 is an inclined surface, and when the first connecting body is installed in the housing 10, the second groove 14 can play a guiding role and also can play a certain limiting role, which is beneficial to assembling the first connecting body in the housing 10.

The battery pack described in the embodiment of the present application is suitable for a power consumption device using the battery pack, for example, the power consumption device may be a smart door lock, a mobile phone, a portable device, a laptop computer, a battery car, an electric vehicle, a ship, a spacecraft, an electric toy, an electric tool, and the like, and the electric tool includes a metal cutting electric tool, a cleaning tool, and the like, for example, an electric drill, an electric wrench, a dust collector, a sweeping robot, and the like. The embodiment of the present application does not specifically limit the above power utilization device. The battery pack provides electric energy for the electric device. The battery pack described in the embodiment of the present application is not limited to be applied to the above-described devices, but may be applied to all devices using the battery pack.

As shown in fig. 18, the electric device 2 includes a battery pack 1, and the battery pack 1 may include the battery pack 1 according to any of the above embodiments, and the battery pack 1 supplies electric power to the electric device 2. The power consumption device 2 of this application embodiment is because the group battery 1 of adopting above-mentioned arbitrary embodiment, its overall structure is comparatively stable relatively, and can protect the invasion of external steam and oxygen effectively to improve the stable performance of group battery 1, improve power consumption device 2's use reliability and security performance from this.

While the present application has been described with reference to preferred embodiments, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the present application, and particularly, features described in connection with the embodiments may be combined in any manner as long as there is no structural conflict.

Claims (10)

1. A battery pack, comprising:

a housing;

a plurality of cells disposed within the housing;

the circuit board is arranged in the shell and is electrically connected with the plurality of battery cells; and

the plug-in component comprises a first connecting body, the first connecting body is connected to the circuit board, and the first connecting body is connected to the shell.

2. The battery pack according to claim 1,

the first connection body includes:

a base connected to the housing; and

and the conductive pieces comprise a first conductive part and a second conductive part, the first conductive part is at least partially embedded in the base, and the second conductive part is connected with the first conductive part and the circuit board.

3. The battery pack of claim 2, wherein the base comprises:

a base body in which at least a part of the first conductive portion is embedded;

the first connecting piece protrudes out of the surface, facing the circuit board, of the base body, and is provided with a clamping groove, and at least part of the second conductive part is embedded in the clamping groove.

4. The battery pack of claim 3, wherein the base body comprises:

a main body portion connected to the first connector;

the first convex part is arranged around the circumferential direction of the main body part, and a concave part is arranged on the outer circumferential surface of the first convex part; and

a second convex part arranged around the circumference of the main body part and positioned on one side of the first convex part departing from the circuit board,

and colloid is filled between the first convex part and the second convex part, and the main body part and the shell are bonded through the colloid.

5. The battery pack according to claim 4, wherein the case includes a case body and a protruding portion protruding from the case body, the protruding portion is disposed opposite to a portion of the main body portion, and the protruding portion abuts against a side of the second protruding portion facing away from the circuit board.

6. The battery pack of claim 4, wherein the housing includes a first slot disposed opposite the circuit board.

7. The battery pack of claim 3, wherein the first connector is connected to the circuit board.

8. The battery of claim 3, wherein the base further comprises a seal ring disposed around an outer peripheral surface of the base body, the seal ring sealingly connecting the base body and the housing.

9. The battery pack according to any one of claims 1 to 8, wherein the plug member further comprises a second connection body connected to the first connection body, the second connection body being for electrical connection with an external member.

10. An electrical device comprising a battery as claimed in any one of claims 1 to 9, the battery being for providing electrical energy.

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